Changchai Co., Ltd. is not only a nearly century-old national industrial enterprise, but also one of the earliest internal-combustion engine manufacturers in China. It is the first listed company in the national agricultural machinery industry and Changzhou city. Now , Changchai has both A and B shares. Its annual output can reach 1.2 million diesel engines. Till now, Changchai accumulative production has already amounted near to 28,000,000 units. The domestic market in the industry rank top 1. Its products have been exported to 78 countries and regions.